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Preparation method of fine-grained diamond-plated carbon nanotube fiber composite material

A carbon nanotube fiber and composite material technology, applied in electrophoretic plating, fiber chemical characteristics, metal processing equipment, etc., can solve the problems of poor diamond dispersion of fiber filaments, poor toughness of ordinary fibers, and poor metal bonding ability, etc., to achieve Enhanced mechanical and electrochemical properties, low degree of graphitization, and enhanced tensile strength

Inactive Publication Date: 2021-06-11
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the diamond on the fiber surface has poor dispersion and is easy to agglomerate, and the ordinary fiber has poor toughness and is easy to break, resulting in short service life and poor processing effect of the final tool.
In addition, the plating of active metal on the surface of diamond is mainly used to increase the binding ability of abrasive grains and cermets and other binders, but due to the high interfacial energy between the two, its bonding ability with metals is poor.

Method used

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  • Preparation method of fine-grained diamond-plated carbon nanotube fiber composite material
  • Preparation method of fine-grained diamond-plated carbon nanotube fiber composite material
  • Preparation method of fine-grained diamond-plated carbon nanotube fiber composite material

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Experimental program
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Effect test

Embodiment 1

[0037] (1) Evenly mix 32g of diamond with a particle size of 1μm and 8g of titanium powder into a stainless steel container, place the stainless steel container in a vacuum reaction furnace chamber, turn on the vacuum pump and heating valve, and heat up at a rate of 5°C / min to 700°C with a vacuum of 10 -4 Pa, keep warm for 30min, then close the heating valve and cool to 150°C, turn off the vacuum pump, take out the stainless steel container after cooling to room temperature, and obtain coated diamond;

[0038] (2) After the coated diamond obtained in step (1) is cleaned with distilled water, then centrifugally dried, then ultrasonically dispersed in 100 mL of distilled water for 10 min, to make a diamond dispersion with a concentration of 0.005 wt %;

[0039] (3) be 110 μ m and the carbon nanotube fiber that length is 5cm with diameter as positive pole, 304 stainless steel is negative pole, by electrophoretic co-deposition, DC voltage is 5V, and the time is 30s, the diamond di...

Embodiment 2

[0042] (1) Evenly mix 40g of diamond with a particle size of 3μm and 8g of molybdenum powder into a stainless steel container, place the stainless steel container in a vacuum reaction furnace chamber, turn on the vacuum pump and heating valve, and heat up at a rate of 5°C / min to 800°C with a vacuum of 10 -3 Pa, keep warm for 30 minutes, then close the heating valve and cool to 150°C, turn off the vacuum pump, take out the stainless steel container after cooling to room temperature, and obtain coated diamond;

[0043] (2) Clean the coated diamond obtained in step (1) with absolute ethanol, then centrifuge and dry it, and then ultrasonically disperse it in 100 mL of absolute ethanol for 10 min to make a diamond dispersion with a concentration of 0.005 wt %;

[0044] (3) be 120 μ m and the carbon nanotube fiber that length is 4cm with diameter as positive pole, 304 stainless steel is negative pole, by electrophoretic co-deposition, DC voltage is 10V, and the time is 20s, the diamon...

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Abstract

The invention discloses a preparation method of a fine-grained diamond-plated carbon nanotube fiber composite material. The preparation method comprises the following steps that (1), active metal is plated on the surface of diamond with the particle size of 1-3[mu]m through vacuum plating to obtain a plated diamond; (2), the plated diamond obtained in the step (1) is cleaned, and is ultrasonically dispersed in distilled water or absolute ethyl alcohol to prepare a diamond dispersion liquid; (3), the plated diamond of the diamond dispersion liquid prepared in the step (2) is uniformly adhered to the surface of the carbon nanotube fiber through chemical bonds by taking the carbon nanotube fiber as a positive electrode and stainless steel as a negative electrode through electrophoresis codeposition; and (4), Joule heat treatment is carried out on the material obtained in the step (3) in a protective atmosphere to obtain the fine-grained diamond-plated carbon nanotube fiber composite material. The mechanical and electrochemical properties of the fine-grained diamond-plated carbon nanotube fiber composite material are obviously enhanced, and the fine-grained diamond-plated carbon nanotube fiber composite material has a good application prospect in the aspects of preparation of abrasive tools, electrode materials and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotube composite materials, and in particular relates to a preparation method of a fine-grained coated diamond carbon nanotube fiber composite material. Background technique [0002] As a one-dimensional continuous assembly of carbon nanotubes, carbon nanotube fibers can not only be used alone, but also can be woven to form two-dimensional films or three-dimensional braided structures, becoming the most concerned macroscopic carbon nanotubes. At the same time, as a new type of fiber material, carbon nanotube fiber has unique properties that traditional fibers do not have. It has many characteristics such as high toughness, high tensile strength, and excellent mechanical properties. Has great potential. Diamond has high hardness, high melting point and stable chemical properties. The coating is prepared on the surface of diamond. The coating can not only prevent the abrasive from being eroded by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/02C25D13/12C25D13/22B22F1/02D01F9/12
CPCC25D13/02C25D13/12C25D13/22D01F9/12B22F2201/20B22F1/17
Inventor 陆静薛志萍徐西鹏黄辉
Owner HUAQIAO UNIVERSITY
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